needs a better name.
The Species Survival Person
is something like a Cosmic Keystone
to a single species or race of beings. As long as they live, all existing members of that group can live, and new ones can be born or made. Should the Species Survival Person
be killed or die, then either a massive attack of No Ontological Inertia
will hit and all the group will die, or their ability to procreate will be removed and lead to eventual extinction.
It takes more to be a Species Survival Person
than mere knowledge of how to manufacture more Mecha-Mooks
or genetically engineer more mutants or Plant People
or what-not. To be a Species Survival Person
requires that the individual in question's very existence be necessary for the group's survival, though not necessarily that they be able to procreate/build more of the group.
One possibility is that they are a Power Source
source) for all the group, typically the case with vampires, and removing them makes all the group either revert to human, burst into dust, or shut down. Another possibility is that they are The Maker
and/or only one who can procreate.
If evil, they're frequently the Big Bad
and killing them will decapitate the Keystone Army
. If good (or at least neutral) they represent a high Uniqueness Value
for what they can do. The queen of a race
of Bee People
can often serve this role (provided there are no other queens).
- In Dance in the Vampire Bund, the Mina Tepesh (descended from that Tepesh) is this for the vampire race. However, as long as a carrier of the pure-blood legacy (un)lives, the species is safe, which comes into play since there is pressure on her to bear an heir.
- Underworld had this trope invoked by Markus, sire of all vampire kind, who played it as a means to keep both himself safe from underlings and his werewolf brother from being killed.
- In Lost Boys the head vampire is this to anyone down their bloodline, those who aren't full vampires revert back to humans.